. >> giffords and her husband mark kelly argued for stronger regulations on guns, specifically for universal background checks on all gun purchases. so we wanted to ask you, what do you think? is it time to take action about gun control? should there be background checks on all gun sales, including those at gun shows? let us know what you think on the "nightline" facebook page or tweet us @nightline. thanks for watching abc news. we hope you check in with "good morning america." they're working while you're sleeping. we'll see you here tomorrow.